Summer vacation. The four sisters of the Kamuro family are about to experience an extremely indulgent summer. Rui (瑠衣), the eldest daughter of the Kamuro family, is a devastatingly beautiful girl. She's a university student who is a bit of a scatterbrain... but a big sister who loves her younger sisters dearly. However, while she's sleeping, her younger sisters do whatever they want to her. And no wonder—her younger sisters love their older sister desperately as well. In this summer when lust knows no bounds, what will become of Rui's chastity!? We will also be posting this on Nocturne Novels.
| Word | Frequency | Difficulty |
|---|---|---|
| 弟子 | 2 | 2.49 |
| 嫌い | 2 | 3.22 |
| 始める | 2 | 2.48 |
| 握る | 2 | 3.01 |
| 美少女 | 2 | 3.50 |
| なのだ | 2 | 2.41 |
| 急に | 2 | 3.14 |
| 次 | 2 | 2.53 |
| と言うか | 2 | 2.68 |
| んん | 2 | 3.70 |
| 時期 | 2 | 3.35 |
| 変わる | 2 | 2.75 |
| 暑い | 2 | 3.77 |
| キス | 2 | 3.48 |
| 壁 | 2 | 2.70 |
| 不和 | 2 | 4.29 |
| 間違い | 2 | 3.21 |
| じゃない | 2 | 2.26 |
| 末っ子 | 2 | 4.66 |
| 夏 | 2 | 3.28 |
| リゾット | 2 | 5.11 |
| 変 | 2 | 2.97 |
| ながら | 2 | 1.91 |
| 場所 | 2 | 2.27 |
| 体重 | 2 | 3.75 |
| 拭く | 2 | 3.81 |
| へ | 2 | 1.95 |
| 人間 | 2 | 2.21 |
| 未だ | 2 | 2.14 |
| ちゃんと | 2 | 2.69 |
| 後で | 2 | 2.94 |
| お昼 | 2 | 3.71 |
| 生理 | 2 | 5.12 |
| 空手 | 2 | 4.77 |
| 人 | 3 | 1.87 |
| 可愛い | 3 | 2.81 |
| ど | 3 | 3.26 |
| これ | 3 | 2.15 |
| やっぱり | 3 | 2.64 |
| だったら | 3 | 2.90 |
| よし | 3 | 2.94 |
| 大事 | 3 | 2.94 |
| 才能 | 3 | 3.30 |
| 今日 | 3 | 2.61 |
| 謎 | 3 | 3.29 |
| 料理 | 3 | 2.62 |
| 時 | 3 | 2.26 |
| やった | 3 | 2.95 |
| でも | 3 | 1.70 |
| 恥ずかしい | 3 | 3.05 |
| 盗撮 | 3 | 4.98 |
| 長い | 3 | 2.68 |
| 三人 | 3 | 2.77 |
| ブラ | 3 | 4.11 |
| 二人 | 3 | 2.19 |
| 仕様 | 3 | 2.43 |
| 帰る | 3 | 2.52 |
| 大学 | 3 | 3.68 |
| 何で | 3 | 2.52 |
| めっちゃ | 3 | 3.83 |
| 唾液 | 3 | 4.47 |
| ありがとう | 3 | 2.86 |
| 含み | 3 | 4.23 |
| だろう | 3 | 1.78 |
| 手 | 3 | 1.97 |
| 最後 | 3 | 2.63 |
| う | 3 | 2.61 |
| ただ今 | 3 | 3.64 |
| 勿論 | 3 | 2.47 |
| みたい | 3 | 2.65 |
| 白い | 3 | 2.82 |
| ほら | 3 | 3.02 |
| よー | 3 | 3.18 |
| ちゃう | 3 | 2.74 |
| そして | 3 | 1.87 |
| 抔 | 3 | 2.04 |
| 不 | 3 | 2.72 |
| 尾根 | 3 | 4.61 |
| 寝る | 3 | 3.20 |
| 夜 | 3 | 2.74 |
| ナプキン | 3 | 4.98 |
| 暇 | 3 | 3.18 |
| 美味しい | 3 | 2.91 |
| のだ | 4 | 1.65 |
| には | 4 | 1.57 |
| 危ない | 4 | 3.21 |
| 中学生 | 4 | 4.11 |
| 達 | 4 | 1.88 |
| だった | 4 | 1.58 |
| 凄く | 4 | 3.11 |
| 来る | 4 | 2.08 |
| 過ぎ | 4 | 3.12 |
| これで | 4 | 2.58 |
| ソファー | 4 | 3.69 |
| 最高 | 4 | 3.21 |
| 夏休み | 4 | 3.96 |
| 感じ | 4 | 2.29 |
| だって | 4 | 2.30 |
| 乳 | 4 | 3.24 |
| 波 | 4 | 3.25 |
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